Home / 32,982.78-45,491.32-20,721.75

Finding the Fourth Proportional to 32,982.78, 45,491.32 and 20,721.75

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Solution

The fourth proportional to 32,982.78, 45,491.32 and 20,721.75 is: 28,580.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,982.78 : 45,491.32 = 20,721.75 : x
  2. Step 2: Convert to fraction form
    32,982.78/45,491.32 = 20,721.75/x
  3. Step 3: Cross multiply
    32,982.78x = 45,491.32 × 20,721.75
  4. Step 4: Simplify right side
    32,982.78x = 942,659,760.21
  5. Step 5: Solve for x
    x = 942,659,760.21/32,982.78
  6. Step 6: Final answer
    x = 28,580.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.